Following is from Wikipedia page of MA

Ma is an upcoming American psychological horror-thriller film directed by Tate Taylor and written by Scotty Landes and Taylor, from a story by Landes. It stars Octavia Spencer, Juliette Lewis, Diana Silvers, Luke Evans, McKaley Miller, Missi Pyle, Corey Fogelmanis, Gianni Paolo and Dante Brown.[1] The film is being produced by Jason Blum through Blumhouse Productions and John Norris.[2]
The film is scheduled to be released on May 31, 2019, by Universal Pictures.

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Everybody’s welcome at Ma’s. But good luck getting home safe.

Oscar® winner Octavia Spencer stars as Sue Ann, a loner who keeps to herself in her quiet Ohio town. One day, she is asked by Maggie, a new teenager in town (Diana Silvers, Glass), to buy some booze for her and her friends, and Sue Ann sees the chance to make some unsuspecting, if younger, friends of her own.

She offers the kids the chance to avoid drinking and driving by hanging out in the basement of her home. But there are some house rules: One of the kids has to stay sober. Don’t curse. Never go upstairs. And call her “Ma.”

But as Ma’s hospitality starts to curdle into obsession, what began as a teenage dream turns into a terrorizing nightmare, and Ma’s place goes from the best place in town to the worst place on earth.

Ma also stars Juliette Lewis (August: Osage County) as Maggie’s mom, Luke Evans (Beauty and the Beast) as a local dad, Missi Pyle (Gone Girl) as his girlfriend, and McKaley Miller (TV’s Hart of Dixie), Corey Fogelmanis (TV’s Girl Meets World), Gianni Paolo (TV’s Power) and Dante Brown (Lethal Weapon TV series) as Maggie’s friends.

From Tate Taylor, the acclaimed director of The Help and Get On Up, and blockbuster producer Jason Blum (Get Out, Halloween, The Purge series) comes a thriller anchored by a daring and unexpected performance from Spencer, one of the most powerful actors of her generation.

Ma is written by Scotty Landes (Comedy Central’s Workaholics), is produced by Blum for his Blumhouse Productions, by Taylor, and by John Norris (executive producer, Get On Up), and is executive produced by Spencer, Couper Samuelson, Jeanette Volturno, and Robin Fisichella.